66134e8a5f
Summary: This patch attempts to clean up the macro configuration mess in `<__threading_support>`, specifically the mess involving external threading variants. Additionally this patch adds design documentation for `<__threading_support>` and the configuration macros it uses. The primary change in this patch is separating the idea of an "external API" provided by `<__external_threading>` and the idea of having an external threading library. Now `_LIBCPP_HAS_THREAD_API_EXTERNAL` means that libc++ should use `<__external_threading>` and that the header is expected to exist. Additionally the new macro `_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL` is now used to configure for using an "external library" with the default threading API. Reviewers: compnerd, rmaprath Subscribers: smeenai, cfe-commits, mgorny Differential Revision: https://reviews.llvm.org/D28316 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@291275 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
1018 B
Plaintext
28 lines
1018 B
Plaintext
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_CONFIG_SITE
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#define _LIBCPP_CONFIG_SITE
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#cmakedefine _LIBCPP_ABI_VERSION @_LIBCPP_ABI_VERSION@
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#cmakedefine _LIBCPP_ABI_UNSTABLE
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#cmakedefine _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
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#cmakedefine _LIBCPP_HAS_NO_STDIN
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#cmakedefine _LIBCPP_HAS_NO_STDOUT
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#cmakedefine _LIBCPP_HAS_NO_THREADS
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#cmakedefine _LIBCPP_HAS_NO_MONOTONIC_CLOCK
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#cmakedefine _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
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#cmakedefine _LIBCPP_HAS_MUSL_LIBC
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#cmakedefine _LIBCPP_HAS_THREAD_API_PTHREAD
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#cmakedefine _LIBCPP_HAS_THREAD_API_EXTERNAL
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#cmakedefine _LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL
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#cmakedefine _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS
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#endif // _LIBCPP_CONFIG_SITE
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